This SF is driving me CRAZY! Sorry to shout but I carry my phone in my pants pocket and all day long it will intermittently sound a triple note. I take the phone out, turn it on and nothing...no notifications, no calls, nothing. I try pressing everywhere on the phone, power on/off switch, volume rocker, all around the phone front, back, sides, top, bottom and every combination I can think of but I can't duplicate the sounds. Also, the sound is unlike any that I can find on the phone. Anyone have any ideas about what to do? Much as I love the SF, if this continues, it will be returned!!